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Aviation History
1946
1946 - 0153.PDF
JANUARY 24TH, 1946 FLIGHT 87 limb being riveted between the alloy sheets of the web, which overlap the edge of the plywood for this purpose. The top boom is of spruce, glued and screwed like the main spar. Number six rib's are a scaled-down version of the number ones. Numbers two, five, seven and eleven rite are each built up from plywood sheet screwed and glued to spruce frames. Two and five carry pick-up fit- tings for the tank doors, while seven and eleven have metal flanges. Metal-clad The engine ribs, numbers three and four, are alloy/ply/ alloy sandwiches rather similar to the fuselage ribs but having "T" section extrusions for both top and bottom booms. The top skin is glued, to the top booms after a thin veneer has been Eeduxed to them. With the excep- tion of number fifteen, which is an all-metal pressing, the remaining ribs are built up with single plywood webs jr screwed and glued to spruce booms. An example of inter-rib strengthening members in thewing for attachment of drop tanks or R.P. gear. •> PLYWOOD NO.I RIB VENEER REDUXED " DURAL ^PLYWOOD VENEER SEDUXED TO DURAL. EXTRUSION: \ PLYWOOD VFNEER REDUXED TO DURAL PRESSING N0I5 RIB NO 5 RI8 Details of rib construction can be followed in conjunction with the illustration on the facing page. To ensure a smooth surface and torsional stiffness in the wing, the leading edges are of all-metal construction. Ex- rept for their attachment by Reduxing to the top of the front spar they are quite conventional. The attachment and construction of the all-metal flap and aileron shrouds is similar to that of the leading edge. Six main bolts and fittings attach the wing to the fusel- age and, like the Mosquito, the Hornet has a balsa-ply sandwich fuselage made in halves split vertically. Small differences are the use of a thinner balsa core to the sand- PRINCIPAL DATA AND PERFORMANCE FIGURES Engines. R.R. Merlins 130 (R.H. port) 131 (L.H. starboard). 45ft. '."screws. D.H. Narrow, 4-blade, 12ft. diameter. Wing span,, area ,, loading Length Height—tail up ... ... ' ... ...„ tail dowr ... Tail span ««. tpeed. j. ft. 44.5ft. 37ft 16ft. 2in. 14ft. 2in.I8fr Urn. 473 m.p.h. « 12,000ft. 2,900 miles.„ range „ climb 4,000ft. >in. to 15,000fc. Operational ceiling 35,OOOft. Type Fighter PhotographicReconnaissance Condition Short-range Long-range Short-rangeLong-range Weight Ib. 16,100 20,900 15,90020,200 Total fuelcapacity gal. 358 928 418928 : . wich, which saves about one-third of balsa weight, and the use of duralumin strengthening plates on the fuselage walls for the attachment of equipment and the like. On the Mosquito, plastic plates or attachment ferrules are generally used, and bolt holes are necessarily wide apart to prevent splitting. By the use of Redux bonding, small metal plates can be substituted for the plastic ones with considerable advantage. On the underside of the fuselage just aft of the rear spar is a hatch giving access to equip- ment and control cables. The Tail The tailplant- is of conventional two-spar all-metal con- struction, with ribs from the rubber press. By virtue of its attachment it is adjustable for rigging, two turnbuckle- type fittings being incorporated. Later marks of Hornet have two extra ribs in the tailplane, with a corresponding increase in span. This modification followed the adop- tion of '' down and in'' airscrew rotation and to some extent offsets the de-stabilisiiig eftect of this arrangement. The area of the horn balances was also slightly increased. The tail fin is of all-metal construction and does not call for any special attention. The addition of a fairly long shallow dorsal fairing up to the fin is now under considera- tion. All elevator and 1 udder control mechanisms on the Hornet are placed behind the fin and are exposed for inspec- tion when the tail cone is removed. Both frame and covering of the main controls are metal, and in each case they are noticeably flat-sided, no doubt to obviate any tendency towards reversal at high altitudes.
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